Where to draw blood for non-invasive DNA

Every woman must experience a major event in her life, that is pregnancy, and must face it seriously. During pregnancy, you must always keep track of the physical condition of the fetus in your belly, so prenatal check-ups are very necessary. Some pregnant women with sex chromosome abnormalities also need to do non-invasive DNA testing. So where should the blood be drawn for non-invasive DNA testing?

Non-invasive DNA is a method of screening for abnormalities, and the testing process is relatively simple. Before the test, 5 ml of venous blood needs to be extracted from the pregnant woman's arm. The extraction method is similar to that used for liver function tests. Then, biometric analysis of the mineralogic DNA in the blood is carried out to detect Down syndrome and other genetic diseases caused by chromosomal abnormalities, such as Patau syndrome and Maria syndrome.

This examination is not painful for pregnant women. The only pain is a little pain when the blood is drawn for test, which is nothing to worry about. And the examination period is also very long, it can be done from 15 weeks to 26 weeks of pregnancy. It is very suitable for pregnant women who have neglected Down syndrome screening, so as to promptly detect abnormalities in the health of the fetus.

However, the cost of non-invasive DNA testing is relatively expensive, ranging from approximately $1,000 to $2,000. Therefore, pregnant women are advised to focus on Down syndrome screening. If a high-risk situation occurs, they are recommended to do non-invasive DNA testing. Because the Down syndrome screening test is provided free of charge in the hospital, it is a free examination program provided by the state to pregnant women for the purpose of eugenics.